Brane Models with a Ricci-Coupled Scalar Field
| dc.creator | Bogdanos, C. | |
| dc.creator | Dimitriadis, A. | |
| dc.creator | Tamvakis, K. | |
| dc.date | 2006-04-25 | |
| dc.date.accessioned | 2026-07-07T10:46:30Z | |
| dc.date.available | 2026-07-07T10:46:30Z | |
| dc.description | We consider the problem of a scalar field, non-minimally coupled to gravity through a $-ξϕ^{2}R$ term, in the presence of a Brane. Exact solutions, for a wide range of values of the coupling parameter $ξ$, for both $ϕ$-dependent and $ϕ$-independent Brane tension, are derived and their behaviour is studied. In the case of a Randall-Sundrum geometry, a class of the resulting scalar field solutions exhibits a folded-kink profile. We go beyond the Randall-Sundrum geometry studying general warp factor solutions in the presence of a kink scalar. Analytic and numerical results are provided for the case of a Brane or for smooth geometries, where the scalar field acts as a thick Brane. It is shown that finite geometries with warp factors that asymptotically decrease exponentially are realizable for a wide range of parameter values. We also study graviton localization in our setup and find that the localizing potential for gravitons with the characteristic volcano-like profile develops a local maximum located at the origin for high values of the coupling $ξ$. | |
| dc.description | 20 pages, 14 figures | |
| dc.identifier | https://arxiv.org/abs/hep-th/0604182 | |
| dc.identifier | http://arxiv.org/abs/hep-th/0604182 | |
| dc.identifier | Phys.Rev.D74:045003,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.74.045003 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/183252 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Brane Models with a Ricci-Coupled Scalar Field | |
| dc.type | text |